Nano current blows away tetras?

clarysage

AC Members
Dec 28, 2005
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I got a 12 gallon Nano Cube for Christmas and got it up and running for freshwater. I added six neon tetras yesterday . . . all seems well except with the pump on they look like they are trying to swim in a raging underwater current. Guys at two different pet stores said they would be OK but when the pump is on . . . and I think it's supposed to be on all the time . . . they just kind of hover in one spot. I turn the pump off to give them some peace and they seem very happy them. Needless to say I am brand new at this and really want to make it work. Can anyone tell me if neon tetras are too little for this type of water movement?
 
it prolly isnt a problem with the force created by the pump, becuase these little guys prolly have to put up with stronger currents out in the wild. just a guess =)
 
that's funny, I have a larger tank, but my little fish are swimming like mad too. . .glad to see I'm not the only one with current problems.

I'd love to help, but I'm a noob too.

:cool:
 
Do you have an area with a weaker current at the edges of the tank? If the tetras stay at the strongest point, they probably like the cureent, plus it gives them excersise.
 
I had a 12 gal with a Penguin 100 and one of those action air-pump decorations. Between the Penguin dropping water into the tank and the air-pump, I had quite a decent current going.

Solved the problem by raising the water level about 1/2" so the Penguin's output flowed across the surface and not dropping down the tank (quieted up the tank a bit as well), but also moved the air-decoration back so it raised the water up the back wall for the Penguin to push.

My fish (guppies) still seem to like to sit in the fast current caused by the Penguin...as they say, it's good exercise.
 
Tetras in Nano current update

Thanks to all you responded on this. It's very encouraging to find a place where people will share your interest and concern and take the time to respond. The tetras are starting to look more at home in the nano. Their swim patterns are different when the pump is off but they don't look so stressed with it on now. I have adjusted the pump that sends water back into the tank, adjusting it different ways to see what seems to work best. Also, I took the magnitized algae cleaner thing (the kind that uses magnets to move a handle on the outside that manipulates the cleaner part on the inside) and put it in a position to diffuse the water flow. I've learned it's not good to leave the pump off for several hours; the water got too cloudy even though all the water levels were good. So I think I will leave it on and take the opinion that the little guys are enjoying getting buffed in their exercise nano spa.
 
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